You will get NestJS Database Design, Query Optimization & Performance Fix
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Project details
A slow API is almost always a database problem. Missing indexes, N+1 query
patterns, over-fetching with eager loading, and poorly structured schemas
can turn a simple endpoint into a multi-second response. These problems get
worse as your data grows and they rarely fix themselves.
I am a Senior Backend Engineer with years designing and optimizing
production databases for applications across Fintech, Healthcare, Real Estate,
and SaaS. I have reduced API latency by 60 to 80 percent on production systems
through targeted query optimization, index design, and schema corrections without downtime or data loss.
I work with PostgreSQL and MongoDB through TypeORM, Prisma, and Mongoose. I know how ORMs generate SQL, where they generate inefficient queries, and how to fix them at the ORM level so your application code stays clean.
What makes this different: I deliver a written report with every engagement.
You will not just receive faster queries you will understand exactly what was wrong, what was changed, and why, If your application is getting slower as it grows, message me with your stack and symptoms before ordering and I will tell you honestly whether it is a database problem
patterns, over-fetching with eager loading, and poorly structured schemas
can turn a simple endpoint into a multi-second response. These problems get
worse as your data grows and they rarely fix themselves.
I am a Senior Backend Engineer with years designing and optimizing
production databases for applications across Fintech, Healthcare, Real Estate,
and SaaS. I have reduced API latency by 60 to 80 percent on production systems
through targeted query optimization, index design, and schema corrections without downtime or data loss.
I work with PostgreSQL and MongoDB through TypeORM, Prisma, and Mongoose. I know how ORMs generate SQL, where they generate inefficient queries, and how to fix them at the ORM level so your application code stays clean.
What makes this different: I deliver a written report with every engagement.
You will not just receive faster queries you will understand exactly what was wrong, what was changed, and why, If your application is getting slower as it grows, message me with your stack and symptoms before ordering and I will tell you honestly whether it is a database problem
Programming Languages
JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$75
|
Standard
$175
|
Advanced
$350
|
|---|---|---|---|
| Delivery Time | 1 day | 4 days | 7 days |
Number of Revisions | 2 | 3 | Unlimited |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
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Fast Delivery
+$50 - $75Frequently asked questions
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AW
Aaron W.
Jun 25, 2026
Full Stack Developer Needed for Stripe-Based International Payout System
AW
Aaron W.
Jun 18, 2026
Full-Stack Developer Needed for Gaming Marketplace MVP
Rasheed was an outstanding developer to work with. He demonstrated strong technical expertise in React, Next.js, and NestJS, and consistently delivered high-quality work throughout the project. Communication was excellent, deadlines were met, and he was proactive in finding solutions whenever challenges came up.
What impressed me most was his attention to detail and commitment to delivering a polished product rather than just completing tasks. He took ownership of the project, provided valuable suggestions, and ensured everything worked smoothly from start to finish.
I would gladly work with Rasheed again and highly recommend him to anyone looking for a skilled, reliable, and professional full-stack developer.
What impressed me most was his attention to detail and commitment to delivering a polished product rather than just completing tasks. He took ownership of the project, provided valuable suggestions, and ensured everything worked smoothly from start to finish.
I would gladly work with Rasheed again and highly recommend him to anyone looking for a skilled, reliable, and professional full-stack developer.
ZA
Zabeth A.
May 5, 2026
Set Up a BullMQ Job Queue Module in NestJS (Redis)
I am really pleased with this one and he understands his craft, would come back for sure.
ZA
Zabeth A.
Mar 16, 2026
NestJS developer for a Scalable REST API Backend with Payment Integration and Role-Based Access
Rasheed delivered exactly what we needed and even went beyond that. He handled everything independently without needing constant guidance, which made the whole process smooth. What really stood out was the way he approached the architecture of the system. His communication was clear and proactive throughout the project, and he asked the right questions from the beginning to make sure everything was built the right way. If you’re building something serious with NestJS and need someone who can truly take ownership of the backend from start to finish, Rasheed is definitely the person you want on your team
About Rasheed
Senior Backend Developer | Node.js, NestJS | Stripe & Payment APIs
100%
Job Success
Lagos, Nigeria - 5:03 am local time
Payments are what I'm known for. Stripe, PayPal, Paystack: checkout flows, subscriptions, recurring billing, marketplace payouts, refunds, and the webhook handling that stops money going missing. My backends have processed around $2.9M (₦4B+) for e-commerce, real estate and fintech companies. The busiest one does about 3,000 orders a day and pays out vendors across two gateways. It has never double-charged anyone, and that isn't luck. Every webhook handler is idempotent and every transaction gets reconciled against the gateway. Sounds basic. It's what most integrations get wrong.
With Stripe I've built full checkout, Stripe Connect marketplaces, and subscriptions that don't fall apart on failed renewals. PayPal I've done both ways clients need it: on its own through the REST API, and sitting next to Stripe so customers pick at checkout. Paystack is where I started and it still runs my highest-volume system.
Payments are the specialty, not the whole job. Clients keep me on for the rest of the backend too: REST and GraphQL APIs in NestJS and Express, multi-tenant SaaS with roles and permissions, PostgreSQL and MongoDB schemas that hold up under concurrent writes, background jobs and event-driven queues in BullMQ and RabbitMQ with proper retries, Redis caching, WebSockets for live updates, and OpenAI or Claude features wired in properly so they don't break the rest of the system. All of it on AWS with Docker and CI/CD.
People usually find me in one of two situations. Something is broken and costing money: payments failing, vendors paid wrong amounts, webhooks missed, a queue dropping jobs nobody noticed. Or they're building something new and want someone who'll say "this requirement is going to bite you" before the first commit, not after the first 2am incident. Either way, I'll tell you honestly on a call whether it's a three-day fix or a three-week build.
I write tests, type everything, and leave documentation your next developer can actually use. I've worked with teams in Lagos, London and the US, cover US, UK and EU hours, and reply within a day.
Tell me in one sentence what's breaking or what you're building. I'll give you a straight answer on whether I'm the right fit, roughly how long it takes, and the one thing I'd flag before you start.
Steps for completing your project
After purchasing the project, send requirements so Rasheed can start the project.
Delivery time starts when Rasheed receives requirements from you.
Rasheed works on your project following the steps below.
Revisions may occur after the delivery date.
Audit & Analyse
I review your schema, entities, queries, and ORM configuration to identify performance bottlenecks, missing indexes, N+1 problems, and structural issues before making any changes.
Query Optimization
I rewrite slow queries, add missing indexes, fix eager loading problems, and eliminate N+1 query patterns that are silently destroying your API response times.